Time-switch.



F1 SCHIID, JR.

TIME SWITCH. APPLICATION FILED AEI-Gr.10, 1911. 1,012,721. I Patented1166.26, 1911.

2 SHEETS-SHEET 1.

l v z 1 E F. SCHMID, JR. TIME SWITCH. APPLICATION FILED AUG.` 1o, 1911.

1,012,721. Patented 116112111911.

2 SHEETS-SHEET 2.

Vl, l I l i a specification.

FREDERICK SCHMID, JR., OF PHILADELPHIA, PENNSYLVANIA.

TIME-SWITCH.

Specification of Letters Patent.

ratenteafne. 2c, 1911.

Application `filed August 10, 1911. Serial No. 643,296.

To all whom 'it may concern:

Be it known that I, FREDERICK SoHuID, Jr., a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Time-Switches, of which the following is My invention relates toimprovements in time switches, the object ofthe invention being toprovide improved mechanism operated by clock work to release an electricswitch, and permit the latter to be thrown to open position.

A further object is to provide an improved electric switch with clockcontrolled mecha.

nism for holding the switch in normal closed position, andoprovide theswitch with springs which ,throw the switch to open position at apre-determined time.

With these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, as will be more fully hereinafter described and pointed out inthe claims. V

4In the accompanying drawings: Figure 1, is a view in front Velevationillustrating my improvements. Fig. 2, is a rear view of Fig. l. Fig. 3,is a view in vertical section on the line 3-3 f Fig. 2. Fig. 4, is aview in vertical section on theline 4-4 of Fig. 2. Fig. 5, is a view inhorizontal section on the line' 5-5 of Fig. 2. Fig. 6, is an enlargedview in horizontal section on the line 6-6 of Fig. 2. Fig. 7, is anenlarged detail view showing the connection between the lever 54 and thearbor 44, and Fig. 8, is a fragmentary detail view illustrating theconnection between the gears 17 and the switch arm 11.

1, represents a supporting plate having an opening 2 therein, in whichaclock 3 is mounted, the face of the clock being exposed on the outerface of plate 1, and the clock "works 4 located back of the plate 1. A

block 5 of-insulating material is fixed to the outer face of plate 1,and supports my improved switch 6 which will be hereinafter described.Beside the block 5, a rotary dial 7 is located, and mounted to turn in acasing 8. This dial is secured upon a shaft 35,

which projects through plate 1, and contains a scale on its outer edgeregistering with afixed pointer 10, and this scale numbered, saidnumbers indicating minutes as will hereinafter appear.

The switch 6 above referred to, comprises parallel contactarms 11, whichare pivotally mounted in brackets 12, and are connected by the ordinarycross bar13 to which a handle 14 is secured.

15, represent the xed contacts on block 5, against which contacts 16engage. These contacts 16 are in the form of flatn levers havingparallel ears .17 located against the opposite sides of the arms 1.1,and connected by pins 18 with said arms, said pins projected throughslots 19 in the arms, so as to allow the contacts 16 a certain amount oflongitudinal movement. VThese ears 17 are provided with lugs 20 whichare connected by coiled springs 21 at both sides of the arms with pins22 near thenupper ends of the arms. These springs tend always to swingthe contact 16 on the pins 18, and hence tend to throw the switch toopen position. As this switch is positioned vertically when it is thrownout of contact, it will fall by gravity. To cushion this fall, groovedspring extensions 23 are provided on the brackets 12, and theseextensions also prevent the arms from engaging the ordinary fuse pieces24.

On the crosssfbar 13 of the switch 6, a toothed segmenft' 25' is fixed,and this segment is` concentric with the path of said switch, and isadapted to move into contact with a notched segment 26 -on the end of anarm 27 projecting through plate 1, and pivoted on a pin 28. The innerend of the arm 27 i's pivotally connected by a rod 30 with a crank disk29. This disk 29 is secured upon a shaft 31 mounted in bearings 32 onthe rear face of plate 1. On shaft 31, a segmental disk 33 is fixed, andis adapted to beheld by means of a locking disk 34 which is supportedupon a short shaft 35 mounted in a bracket 36 on the rear face of plate1', and located at right angles to the segmental disk33. On the shaft35, a gear wheel 37 is secured, and meshes with a vertically movablerack bar 38. This rack bar 38 is guided by fixed pins 39, and set screws40 located in grooves 41' in the opposite faces of said rack bar, andsaid. bar held in its operative relationship by means of blocks 42in'bracket 36, and a bracket 43, located below thebracket-36. Thisbracket 43, to-i arbor 44. On this arbor 44, a relatively small pinion45 is secured, and meshes with a gear 46 driven by the clock mechahismabovey described. On this arbor 44, a gear wheel 47 is loosely mounted,but frictionally held to the shaft by means of a spring 48. This spring48 comprises a plurality of arms as seen most clearly in Fig. 7, whichbear against-Whe face of gear 47,I and hold the latter against ashoulder on the arbor. In other words, this arbor 44 is made with twodiameters as seen most clearly in`=Fi02 3, so that a shoulder is formedagainst which the gear 47 is held by the spring 48. This gear 47 meshesnwithvthe rack 38, and is adapted to be engaged by a pinion 49-ona shaft50. This shaft 50 is connected to a spring 51, which normally holds thepinion 49 out of meshwith gear 47, and also senves to tightly close theopening through which said shaft 50 projects to exclude dust and dirtfrom the works in back of the plate. y

It is to be understood that any suitable form of cover (not shown) maybe provided to inclose the working parts on the back of the plate 1.Shaft 50 projects be'- yond the outer face of plate 1, and is providedwith a knob 51aL to facilitate the movement of the, shaft.

The disk 34 above referred to is provided with a recess 52 of the propersize for the passage of a finger 53 on segmental disk 33, and when thedial 7 is in zero position, this recess 52 will register with the finger53. When in any other position, the recess will not register with thefinger, and the latter will be held against the face of disk 34.

A spring lever 54 is pivotally supported on a pin 55 secured :to therear fahe of plate 1, and one end of this lever is bifurcated as shownat 56, and projects into an annular groove 57 in arbor 44, so that thislever serves to move the arbor and move gear 45 into out of mesh withthe gear 46. It must be borne in mind that this lever 54 moves at bothends toward and away from plate 1, rand while the part 54 is a pivotpin,the lever fulcrums on this pin but moves in a direction parallel to thepin. The other end of lever 54 is provided with a bifurcated extension58 to receive an eccentric 59 fixed to shaft 31, so that when this shaft31 is turned, the lever 54 will be moved either to throw the gear 45into or out of mesh with gear 46.

The operation is as follows: When the dial is at zero, the-switch may beclosed. When the switch is closed, the segments 25 and 26 will cause thearm 27 to swing upwardly, and through the medium of rod 30, crank disk29 and shaft 31, will be turned in a direction to move finger 53 to aposition back of disk 34. While the switch is held in this closedosition, knob 51 is grasped and pushed inwardly until the pinion 49meshes with the gear 47. The knob is then 4turned to turn the dial 7,through the medium of gear 47,y rack bar 38, gear 37, and shaft 35, soas to set the dial to \any position desired in accordance with the timethe switch is to remain closed. This movement of shaft 35 causes thedisk 34 to, turn to move its recess 52 away from the finger 53, `whichlatter is then held against the back face of said disk 34. The turningof shaft 3, through the medium of lever 54moves the arbor 44longitudinally, and moves pinion l45 into mesh with gear 46. This lever54 contains sufficient inherent elasticity to allow for the pinionengaging the` face ofthe teeth 46. In other words, it is possible thatwhen the arbor 44 is moved, the teeth of pinion 45 will not registerwith the teeth of gear 46. The spring lever 54 will therefore hold thepinion against the face of disk 46 until the teeth are in register whenthe pinion 45 will spring into place. The parts will then be in theposition shown in the drawings, and the clock work will be turning gear46 and pinion 45. As the latter turns, gear 47 will draw rack bar 36downward, and through the medium ofy ear 37 and shaft 35, turn disk 34.When the recess 52 moves into register with the finger 53, the springs21 will be permitted to act, and they will throw the switch to openposition and the arm 27 will fall, turning shaft 31 and through themedium of lever 54, draw the pinion 45 out of mesh with the clock work.This is importantbecause the clock is not required to do any work otherthan its normal work of keeping time, except when the switch is inclosed position.

,j Various slight changes might be made in tlje general form andarrangement of partsl described without departing from my invention andhence I do not limit myself to the4 precise details set forth, butconsider myselfv at liberty to make such changes and alterations asfairly fall within the spirit and scope of the appended claims.

rHaving thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a time switch, the combination with an electric switch, a springexerting pres` sure to open the switch, of a shaft, means connected withthe shaft for holding the switch in closed position, a rotary diskhaving a recess therein, clockf mechanism control/ling theV movement ofsaid disk, and a finger on saidl shaftmovablethrough'the recess in thedisk, substantially as described.

2. In a time switch, the combination with an electric switch, a springexerting pressure to open the switch, of a shaft, means connected lwiththe shaft for holding the switch in closed position, a rotary diskhaving a recess therein, clock mechanism controlling the movement ofsaid Idisk, a' finger on said shaft movable through the recess in thedisk, and means operated by the turning of`the shaft when the switch isclosed for throwing the clock mechanism into operation, substantially asdescribed.

3. In a time switch, the combination with an electric switch, a springexerting pressure to open the switch, of a shaft, a pivoted arm, atoothed segment on said arm, a toothed segment on the switch constructedto engage the arm segment and move the arm, a crank on said shaft, a rodconnecting the crank and arm, a finger on said shaft, a recessed diskconstructed to hold the finger and the shaft against movement, and aclock work controlling the movement of the disk, substantially asdescribed.

, 4. In a time switch, the combination with an electric switch, a springexerting pressure to open the switch, of a shaft, a pivoted arm, atoothed segment on said arm, a toothed segment on the switch constructedto engage the arm segment and move the arm, a crank on said shaft, a rodconnecting the crank and arm, a finger on said shaft, a recessed diskconstructed to hold t-he finger and the shaft against movement, meansfor setting the disk so that its movement will be regulated for apre-determined length of time, and a clock work controlling the movementof the disk,` substantially as described.

5. In a time switch, the combination with an electric switch, a springexerting pressure to open the switch, of a shaft, a pivoted arm, atoothed segment on said arm, a toothed segment on the switch constructedto engage the arm segment and move the arm, a. crank on said shaft, arod connecting the crank and arm, a finger on said Shaft, a recesseddisk constructed to hold the finger and t-he shaft against movement, ashaft supporting said disk, a dial on said lastmentioned shaft, apointer registering with said dial, 'and a clock work controlling themovement'in one direction of said disk and dial, substantially asdescribed.

6. In a time switch, the combination with an elect-ric switch, a springexerting pressure to open t-he switch, of a shaft, a pivoted arm, atoothed segment on said arm, a toothed segment on the switch constructedto engage the arm segment and move the arm, a crank on said shaft, a rodconnecting the crank and arm, a finger on said shaft, a recessed diskVconstructed to hold the finger and the shaft against movement, a shaftsupporting said disk, a dial on said lastmentionedshaft, a pointerregistering with said dial, a gear on said last-mentioned shaft, a clockwork, a gear driven by said clock work, and a rack bar meshing with saidlast-mentioned gears, substantially as described.'

7 In a time switch, the combination with a supporting plate havingopenings therein, a clock mounted in one of said openings, an electricswitch supported on said plate, springs tending to open said switch, anda rotary dial mounted against the outer face of said plate, of a shaftsupported against the inner face of the plate, a crank on said shaft, apivoted arm moved by the switch, a link connecting said arm and crank, afinger on said shaft, a dial shaft to which the dial is secured, said dial shaft projecting through the plate, a recessed disk on the inner endof said dial shaft, a finger on the first-mentioned shaft adapted tomove through the recess in said disk, means for moving the dial andrecessed disk so that the recess in the disk is outl of register withthe finger, and means connecting the clock and the dial shaft, wherebythe clock serves to move said dial shaft and move the recessed portionof the disk into register with the finger, substantially as described.

8. In a time switch, the combination with a supporting plate havingopenings therein, a clock mounted in one of said openings, an electricswitch supported on said plate, springs tending to open said switch, anda rotary dial mounted against the outer face of said plate, of a shaftsupported against the inner face of the plate, a crank on said shaft, apivoted arm moved by the switch, a link connecting said arm and crank,aiinger on said shaft, a dial .shaftr to which the dial is secured, saiddial shaft projecting through the plate, a recessed disk on t-he innerend of said dial shaft, a finger on the first-mentioned shaft adapted tomove through the recess in said disk, a clock driven gear, a gear on thedial shaft, and a rack bar connecting said gears, substantially asdescribed.

9. In a time switch, the combination with a supporting plate havingopenings therein, a clock mounted in one of said openings, an electricswitch supported on said plate, springs tending to .open said switch,and a rotary dial mounted against the outer face of said plate, of ashaft supported against the inner face of the plate, a crank on saidshaft, a pivoted arm moved by the switch, a link connecting said arm andcrank, a finger on said shaft, a dial shaft to which the dial issecured, said dial shaft projecting through the plate, a recessed diskon the inner end of said dial shaft, a finger on the first-mentionedshaft adapted to move through the recess in said disk, a clock drivengear, a gear on the dial shaft, and a rack bar connecting said gears, aspring secured to thecinner face of said plate, a short shaft projectingthrough the plate and mounted in said spring, a pinion on saidlast-mentioned shaft adapted to be moved into mesh with the clock drivengear, and a knob on the outer end of said 10. ln a time switch, thecombination with a supporting plate having openings j therein, a clockmounted inO one of said openings, anelectric switch supported on saidplate, springs tending to open said switch, and a rotary dial mountedagainst V to open the switch, of a shaft, means conthe outer face ofsaid plate, of a shaft supported againstthe inner face of the plate, acrank on said shaft, a pivoted arm moved by the switch, a linkconnecting said arm and crank, a finger on said shaft, a dial shaft towhich the dial is "secured, said dial shaft projecting through theplate, a ref therein, j fixed contacts, movable contacts cessed disk onthe inner end of said dial shaft, a finger on the first-mentioned shaftadapted to move through the recess in said disk, a clock driven gear, agear on the' dial f lsaid arms, whereby the tension of said shaft, arack bar connecting said gears, a spring secured to the inner face ofsald plate, a 4short shaft projecting through the ystantially asdescribed.

plate and mounted in said sprmg, a pinion on said last-mentioned shaftadapted to be f moved intomesh with the clock. driven gear, v

and a knob on the outer end of Hsaid lastmentioned shaft, whereby thesame and the dial may be set, an arbor on which said clock driven gearhas frictional engagement, a small gear fixed to said arbor, andnormally out of mesh with the' lclock work, and means operated by thelirst mentioned shaft for moving said arbor to 'position said small gearinto mesh with the clock work, substantially as described.

11. ln a time switch, the combination with a 4supporting .plate havingopenings therein, a clock mounted in one of said openings, an aelectricvswitch supported on said plate, springs tending to open said switch,and a rotary dial mounted against the outer fac'e'ofsaid plate, of ashaft sup-W ported against the inner face of the plate,

' shaft to which the dial is secured, said dial shaft projecting throughthe plate, a recessed disk on the inner end of said dial shaft, a fingeron the first-mentioned shaft adapted to move. throughll the recess insaid disk, a clock driven gear, a gear n the dial shaft, a rack kbarconnecting said gears, a

spring' secured to the inner face of j said plate', a short shaftprojecting through the plate andmounted in said spring, on saidlast-mentioned`shaft adapted to be moved into mesh with the clock drivengear, a knob on the outer end yof said last-mentioned shaft, whereby thesame and the dial may beset, an arbor on which said clock.

drivenn gear has 'frictional engagement, a small gear fixed tosaid`arbor, and normally out of mesh with the clock work, a spring apinion wherein, a forked end on one end of said lever mounted in saidgroove, a cam .on said first-mentioned shaft, and a recessed extensionon said. spring lever in which said cam is located, substantially asdescribed.

12. lin a time switch, the combination with an electric switch, a,"spring exerting pressure nected with the shaft for holding the switch inclosed position, and clock mechanism conl trollingthe movement of theswitch holding having perforated ears at their ends straddling saidarms, pins through said ears and slots, and springs connecting said earswith springs tends to pivot the movable contacts and throw the switch toopen position, sub- 13. lin a time switch, the combination with fanelectric switch, a spring exerting pressure 5to opentthe switch, of ashaft, a pivoted arm, said arm and switch constructed so that the^yclosing of the switch moves the arm, a shaft, vmeans connecting the armand shaft whereby the movement of the arm turns the shaft, a linger onsaid shaft, a recessed disk const-ructed to hold the linger and shaftagainst movement to maintain Athe switch in closed position, a clockwork controlling the movement of the disk, said switch comprising Vtwopivoted parallel arms having slots K segment on the switch constructedto therein, fixed contacts, 1movable contacts having perforated .ears attheir endsstraddling said arms, pins through said ears and slots, andsprings connecting said ears with said arms whereby the tension of saidsprings tends to pivot the movable contacts and throw the switch to openposition, substantially as described.

' 14.' In a time switcl1the combination with an electric switch, aspring exerting pressure to open the switch, of a shaft, a pivoted arm,a toothed segment on said arm, a toothed engage the arm segment andvmove the arm, a crank on said shaft, a rod connecting the crank andarm, aiinger on said shaft, a'recessed disk constructed to hold thefinger and the shaft against movement, a clock work conntrolling themovement of the disk, said switch comprising two pivoted parallel armshaving slots therein, fixed contacts, movable,

contacts ha ing perforated ears attheir'4 ends straddling said arms,pins through said ears and slots, andspringsconnecting said ears withsaid arms, whereby the tension'of said springs tends to pivot themovable contacts andthrow the switch to open position,

V substantially as described.

15. Ina time switch, the combination with an electric switch, a springexerting pressure to open the switch, of a shaft, a pivoted arm, atoothed se ment on said arm, a toothed segment on te switch constructedto engage the arm segment and move the arm, a crank on said shaft, a rodconnecting the crank and arm,a finger on said shaft, a recessed diskconstructed to hold the finger and the shaft against movement, a clockwork conl trolling the movement of the disk, said switch comprising twopivoted parallel arms having slots therein, fixed contacts, movablecontacts havin perforatedears at their ends f straddling sai arms, pinsthrough said ears and slots, and springs connecting said ears with saidarms, whereby the tension of said springs tends" to pivot t-he movablecontacts and throw the switch to open position, and

grooved stops adapted to be engaged by 20 FREDERICK SOHMID, JR.

Witnesses:

C. R. ZIEQLER, CHAs. E. Po'r'rs.

